<template>
  <el-container class="home-container">
    <!--头部区域-->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!--页面主体区域-->
    <el-container>
      <!--侧边栏-->
      <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse">
              <i :class="isCollapse ? 'iconfont icon-jichu-tubiao-xianxing-zhediezhankai' : 'iconfont iconcebianlan'"></i>
          </div>
        <!--侧边栏菜单区-->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <!--一级菜单-->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!--一级菜单的模板区域-->
            <template slot="title">
              <!--图标-->
              <i :class="item.icon"></i>
              <!--文本-->
              <span>{{item.authName}}</span>
            </template>

            <!--二级菜单-->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                <template slot="title">
                <!--图标-->
                <i class="el-icon-menu"></i>
                <!--文本-->
                <span>{{subItem.authName}}</span>
            </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--右边主体区域-->
      <el-main>
          <!--路由占位符-->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        //由于没有后端接口，暂时菜单写死
        return {
            //菜单列表
            menulist:[],
            //是否折叠
            isCollapse:false,
            //激活的链接地址
            activePath:'',
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        //登录退出
        logout() {
            window.sessionStorage.clear();
            this.$router.push("/login");
        },
        //菜单的折叠
        toggleCollapse(){
            this.isCollapse = ! this.isCollapse;
        },
        //保存链接的激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath);
            this.activePath = activePath;
        },
        //获取所有的菜单信息
        async getMenuList(){
            // const {data:res} = await this.$http.get('menus')
            // if(res.meta.status !== 200)
            //     return this.$message.error(res.meta.msg)
            // this.menulist = res.data
            // console.log(res)
            this.menulist = [
                {
                    "id":150,
                    "authName":"用户管理",
                    "path":"users",
                    "order":1,
                    "icon":"iconfont iconyonghuguanli",
                    "children":[
                        {
                            "id":101,
                            "authName":"用户列表",
                            "path":"users",
                            "children":[]
                        }
                    ]   
                },{
                    "id":151,
                    "authName":"权限管理",
                    "path":"rights",
                    "icon":"iconfont iconquanxian",
                    "children":[
                        {
                            "id":102,
                            "authName":"角色列表",
                            "path":"roles",
                            "children":[]
                        },
                         {
                            "id":103,
                            "authName":"权限列表",
                            "path":"rights",
                            "children":[]
                        }
                    ]   
                },{
                    "id":152,
                    "authName":"商品管理",
                    "path":"goods",
                    "icon":"iconfont iconshangpin",
                    "children":[
                        {
                            "id":104,
                            "authName":"商品列表",
                            "path":"goods",
                            "children":[]
                        },
                        {
                            "id":105,
                            "authName":"分类参数",
                            "path":"params",
                            "children":[]
                        },
                         {
                            "id":106,
                            "authName":"商品分类",
                            "path":"categories",
                            "children":[]
                        }
                    ]   
                },{
                    "id":153,
                    "authName":"订单管理",
                    "path":"orders",
                    "icon":"iconfont icondingdan",
                    "children":[
                        {
                            "id":107,
                            "authName":"订单列表",
                            "path":"orders",
                            "children":[]
                        }
                    ]   
                },{
                    "id":154,
                    "authName":"数据统计",
                    "path":"reports",
                    "icon":"iconfont iconshujutongji",
                    "children":[
                        {
                            "id":108,
                            "authName":"数据列表",
                            "path":"reports",
                            "children":[]
                        }
                    ]   
                }
            ]
        }
    }
};
</script>

<style lang="less" scoped>
    .home-container {
        height: 100%;
    }

    .el-header {
        background-color: #373d41;
        display: flex;
        justify-content: space-between;
        padding-left: 5px;
        align-items: center;
        color: #fff;
        font-size: 20px;
        > div {
            display: flex;
            align-items: center;
            span {
            margin-left: 15px;
            }
        }
    }

    .el-aside {
        background-color: #333744;
        .el-menu{
            border-right:none;
        }
    }

    .el-main {
        background-color: #eaedf1;
    }

    .iconfont{
        margin-right: 6px;
    }

    .toggle-button{
        background-color: #4A5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>

